Machine for making seamless cans



A. W. SPAULDING June 15 1926. "588,819

MACHINE FOR MAKING SEAMLESS CANS Filed March 17, 1923 ATTORNEY Patented June 15, 1926.

UNITED STATES PATENT OFFIQE.

ARTHUR WILBUR SI JTTTITJTF'EOF OAKLAND, CALIFOBlWIA. v

MACHINE FOR MAKING SEAMLESS CANS.

Application filed March 17, 1923. Serial No. 625,918.

The present invention relates to improveto extend across the roller 1 and under the ments in a method of and machine for inguides 5 and 6. creasing the diameter of a metal tube and The can is formed in the following manner, has particular reference to seamless cans, a piece of seamless tubing 8 is cut to the 5 which are particularly adapted to be used proper length to extend across the roller 1.

in my machine, and according to the method The mandrel 7 is placed through the tubing hereinafter described. It is particularly 8 and under the guides 5 and 6. Suitable proposed in the present invention to confine power is applied to the shaft 2 to rotate the a peripheral section of the tube to be enroller 1 and the mandrel 7 and tube 8 are 10 larged between two rollers and to impart reslowly moved around the periphery of the volving motion to one of the same whereby roller in the guides 5 and 6. The guides are the thickness of the material is reduced and so spaced from the periphery o1 the roller a corresponding enlargement of the tube that the mandrel will exert a constant presobtained. sure against the tube which is in contact 15 It is further proposed to provide for this with the roll, the walls of the tube will thus purpose one large roller which turns on a become thinner and the tube will become stationary axis and a smaller roller or mangreater in diameter, thus forming a can of drel which is guided to travel along the pethe proper size and weight. The can now riphery of the large roller in a planetary has a head placed thereon in the usual 20 manner. machine.

Further objects of my invention will ap- Having described my invention I claim: pear as the specification proceeds. An apparatus for rolling or enlarging the In the drawing in which my invention is diameter of seamless tubes comprising a roll illustrated: of large diameter, a mandrel of small diam- 25 Fig. 1 is a side view partly in section of cter parallel thereto, said roll and mandrel my can forming machine. being spaced to engage the inside and out- Fig. 2 1s a sectional View taken on the hne side periphery of a tube, a pair of arcuate 22 of Fig. 1. guides engaging the opposite ends of the Referring more particularly to the drawmandrel and means to rotate the large roll '30 ing, a roller 1 is secured to a shaft 2 which and thereby draw the tube between the large is journaled in the brackets 3 and 4. roll and the mandrel and actuate the man- Arcuate guides 5 and 6 are secured to the drel to follow the arcuate guides.

brackets 8 and 4 respectively adjacent the In testimony whereof I atlix my signature.

ends of the roller 1. A mandrel 7 is adapted ARTHUR TVILBUR SPAULDING. 

